A Cooperative Routing Scheme Using Inter-Satellite Links to Assist Data Downloading for LEO Satellite Networks
Low earth orbit (LEO) satellite networks can provide Internet service to users in areas where cellular networks are difficult to deploy. One critical function of satellites is to transfer data from satellite networks to ground core network through earth stations (ESs). The Ka-band multiple-input mul...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/20/7986 |
| _version_ | 1797469912952733696 |
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| author | Zijian Yang Huijie Liu Jifeng Jin Feng Tian |
| author_facet | Zijian Yang Huijie Liu Jifeng Jin Feng Tian |
| author_sort | Zijian Yang |
| collection | DOAJ |
| description | Low earth orbit (LEO) satellite networks can provide Internet service to users in areas where cellular networks are difficult to deploy. One critical function of satellites is to transfer data from satellite networks to ground core network through earth stations (ESs). The Ka-band multiple-input multiple-output (MIMO) can be used to establish feeder links with larger bandwidth between satellites and ESs. However, propagation at the Ka band is subjected to rain attenuation and various atmospheric fading mechanisms, which severely reduce the maximum link capacity. As a result, the insufficient capacity of feed link becomes the throughput bottleneck of satellite networks. In order to increase network throughput, it is important to fully use feeder link resources. In this paper, we propose a cooperation scheme to route packets to ESs through a well-resourced feeder link, such that the bandwidth of the feeder links can be fully utilized and the throughput of data downloading at the ESs is maximized. Firstly, we model the satellite network system and the feeder link based on MIMO technology. Then, a Maximum-Flow-Minimum-Cost (MCMF) routing algorithm consisting of two Linear Programs (LPs) is presented to compute maximum-flow routings for data download. Eventually, a variety of simulations are conducted to assess the proposed scheme, which shows that the cooperative routing scheme outperforms the existing SiRRS method in terms of throughput and delay. |
| first_indexed | 2024-03-09T19:30:40Z |
| format | Article |
| id | doaj.art-5bc8434f4ce145caa56700440fa981b3 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T19:30:40Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-5bc8434f4ce145caa56700440fa981b32023-11-24T02:29:51ZengMDPI AGSensors1424-82202022-10-012220798610.3390/s22207986A Cooperative Routing Scheme Using Inter-Satellite Links to Assist Data Downloading for LEO Satellite NetworksZijian Yang0Huijie Liu1Jifeng Jin2Feng Tian3Innovation Academy for Microsatellites of CAS, Shanghai 201203, ChinaInnovation Academy for Microsatellites of CAS, Shanghai 201203, ChinaInnovation Academy for Microsatellites of CAS, Shanghai 201203, ChinaInnovation Academy for Microsatellites of CAS, Shanghai 201203, ChinaLow earth orbit (LEO) satellite networks can provide Internet service to users in areas where cellular networks are difficult to deploy. One critical function of satellites is to transfer data from satellite networks to ground core network through earth stations (ESs). The Ka-band multiple-input multiple-output (MIMO) can be used to establish feeder links with larger bandwidth between satellites and ESs. However, propagation at the Ka band is subjected to rain attenuation and various atmospheric fading mechanisms, which severely reduce the maximum link capacity. As a result, the insufficient capacity of feed link becomes the throughput bottleneck of satellite networks. In order to increase network throughput, it is important to fully use feeder link resources. In this paper, we propose a cooperation scheme to route packets to ESs through a well-resourced feeder link, such that the bandwidth of the feeder links can be fully utilized and the throughput of data downloading at the ESs is maximized. Firstly, we model the satellite network system and the feeder link based on MIMO technology. Then, a Maximum-Flow-Minimum-Cost (MCMF) routing algorithm consisting of two Linear Programs (LPs) is presented to compute maximum-flow routings for data download. Eventually, a variety of simulations are conducted to assess the proposed scheme, which shows that the cooperative routing scheme outperforms the existing SiRRS method in terms of throughput and delay.https://www.mdpi.com/1424-8220/22/20/7986LEO satellite systemsnetwork flowsatellite data downloadingrouting algorithm |
| spellingShingle | Zijian Yang Huijie Liu Jifeng Jin Feng Tian A Cooperative Routing Scheme Using Inter-Satellite Links to Assist Data Downloading for LEO Satellite Networks Sensors LEO satellite systems network flow satellite data downloading routing algorithm |
| title | A Cooperative Routing Scheme Using Inter-Satellite Links to Assist Data Downloading for LEO Satellite Networks |
| title_full | A Cooperative Routing Scheme Using Inter-Satellite Links to Assist Data Downloading for LEO Satellite Networks |
| title_fullStr | A Cooperative Routing Scheme Using Inter-Satellite Links to Assist Data Downloading for LEO Satellite Networks |
| title_full_unstemmed | A Cooperative Routing Scheme Using Inter-Satellite Links to Assist Data Downloading for LEO Satellite Networks |
| title_short | A Cooperative Routing Scheme Using Inter-Satellite Links to Assist Data Downloading for LEO Satellite Networks |
| title_sort | cooperative routing scheme using inter satellite links to assist data downloading for leo satellite networks |
| topic | LEO satellite systems network flow satellite data downloading routing algorithm |
| url | https://www.mdpi.com/1424-8220/22/20/7986 |
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